Concept Design Using Topology and Topography Optimization

Chapter 1: Topology Optimization of a Structural C-ClipStep 2: Post-process analysis results1. From the Post page, select the contour panel.2. Click simulation= and select opposing forces.3. Click data type= and select Displacements.4. Change from total disp to y comp.5. Activate min/max titles and info title.6. Click contour.What is the displacement at Nodes A and B (upper node and lower node,respectively see Figure 1-4)?________________________________________________________7. Click return.Optimization SetupStep 1: Topology optimizationWe have defined the preliminary finite element model consisting of shell elements,element properties, material properties, and loads and boundary conditions. Now we willperform topology optimization with the goal of minimizing the amount of material to beused. However, when using less material in the existing mesh with the same loads andboundary conditions, we would expect the model to be less stiff and deform more than itdid. Therefore, we need to constrain the optimization process with a displacement sothat we achieve a balance between the material to be used and the overall stiffness ofthe material.The forces in the structure are applied on the outer nodes of the opening of the clipmaking those two nodes critical locations in the mesh. We applied a displacementconstraint on the end nodes so they would not displace more than 0.07 in the y-axis.Define the design space for topology optimization from the optimization panel inHyperMesh using the topology subpanel. The optimization process is as follows:1. Define the design space for optimization and thereby, the design variables.2. Define all responses for the optimization (in this tutorial, the responses would bevolume fraction and displacement).3. Define the displacement at the end nodes of the c-clip as constraints.4. Define volume fraction as the objective function..Definingthe same response as the objective function and a constraint is notallowed.14Concept Design Using Topology and Topography Optimization OptiStruct 7.0Proprietary Information of Altair Engineering, Inc.